The intervention program used a number of techniques (both cognitive and behavioral) that have been suggested in previous research as potentially effective in addressing factors identified as important for the successful treatment of batterers in a group therapy format. Anger logs and time-out approaches were used to identify and discuss emotions and clients' reactions to them. A "buddy system" was implemented to develop social support and cohesion among members. Identification and altering of irrational beliefs were used to address problematic cognitions; communication, problemsolving training, and role playing were used to develop useful interpersonal skills. Study 2 benefited from the results of study 1, with some changes in the characteristics of the batterer that were assessed as well as modifications in the treatment program. Overall treatment effects were determined for procedures designed to modify abusive males' perceptions of assertiveness; attitudes toward love; locus-of-control orientation; low self-esteem; and increased levels of hostility, anxiety, guilt, and depression. Study 1 identified reduced levels of guilt proneness and increased levels of group conformity as a result of the intervention program. Study 2 evaluated a modified, cognitive-behavioral treatment format that focused more on communication, problemsolving, and sexual attitudes and practices. All levels of violence were significantly reduced, and changes in endorsement of sexual attitudes were noted. Males showed lower levels of passive-aggressiveness and increasing levels of narcissism as a function of treatment. Implications for program development and research are discussed. 4 tables and 38 references